Cognizant — after repeated request on experience letter for one month, no one bothered to reply

Address:

Sri Venkateswar Residency, Hono 12-2-417/B/!2,Bld-1.T-2, SBI COLONY, GUDIMALAKAPUR, Mehdipatanam, Telengana, Hyderabad, Telangana, 500028

I requested for experience letter on 18th august 2019, today it is 12th september 2019 i didn't receive any letter nor any reply though i asked for help for last one month with numerous requests on update.

They didn't even bothered to answer my mails. Is this what cognizant treats alumni of their institute. They even don't understand the needs of employee.

I asked all manager they already approved my experience but exithelpdesk india.